Rapid detection method of asphalt penetration index for steel bridge deck pavement

Abstract

The invention discloses a rapid detection method of an asphalt penetration index for steel bridge deck pavement. The method comprises the following steps: S1, collecting a plurality of asphalt samples, and respectively preparing asphalt analysis samples; S2, sampling the asphalt analysis samples by adopting an attenuated total reflection infrared spectrum acquisition mode to obtain infrared spectrums; S3, screening the corresponding optimal wavelength as a sample according to the infrared characteristic absorption peaks of the infrared spectrums; S4, establishing a quantitative data model according to the sample, importing calibration set spectral data into the data model for calculation, and generating an original model view; S5, judging whether an abnormal value exists or not, if so, removing the abnormal value, recalculating a new data model, generating a new model view, and entering step S6; if not, taking the original model view as a new model view and entering the step S6; and S6, acquiring the infrared spectrum of asphalt to be detected, importing the infrared spectrum into the new model view, and calculating the penetration of the asphalt to be detected. The infrared spectrum and chemometrics combined analysis method can more quickly and accurately detect the penetration degree of the asphalt.

Description

Technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a rapid detection method of asphalt penetration index for steel bridge deck paving. Background technique [0002] Steel bridge deck paving has always been the difficulty and focus of bridge construction. For steel bridge deck paving, its stress and deformation are far more complex than road pavements or airport pavements, so its strength, deformation characteristics, temperature stability, fatigue durability, etc. have higher requirements. At the same time, due to the special location of the paving, there are special requirements in terms of performance such as light weight, high cohesiveness, and impermeability. As an important part of the bridge driving system, the quality of bridge deck pavement directly affects driving safety, comfort, bridge durability, investment and social benefits. [0003] As an important raw material in the construction of steel bridge deck pa...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a rapid detection method of the asphalt penetration index for steel bridge deck pavement, aiming at solving the problem that the traditional detection method in the prior art takes a long time and can only reflect the specific temperature and specific load conditions. However, SHRP testing is time-consuming and labor-intensive, and the equipment is expensive, so it cannot determine the quality of asphalt in a timely and effective manner.

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